NASDAQ:RBCN Rubicon Technology (RBCN) Stock Price, News & Analysis $4.35 +0.01 (+0.23%) As of 03:17 PM Eastern Add Compare Share Share Stock Analysis Stock AnalysisChartCompetitorsDividendHeadlinesSEC FilingsShort InterestTrendsBuy This Stock About Rubicon Technology Stock (NASDAQ:RBCN) 30 days 90 days 365 days Advanced Chart View Price History Chart DataSkip Price History Chart Get Rubicon Technology alerts:Sign Up Key Stats Today's Range$4.31▼$4.3750-Day Range$2.04▼$4.3752-Week Range$0.96▼$5.51Volume8,029 shsAverage Volume3,904 shsMarket Capitalization$10.35 millionP/E Ratio22.90Dividend YieldN/APrice TargetN/AConsensus RatingN/A Company Overview Rubicon Technology, Inc. provides monocrystalline sapphire for applications in optical and industrial systems in North America, Asia, and internationally. The company offers optical and industrial sapphire products in various shapes and sizes, including sheets, rods, tubes, core, ingots, and prisms for a range of end markets comprising defense and aerospace, specialty lighting, instrumentation, sensors and detectors, semiconductor process equipment, electronic substrates, medical, and laser applications. It serves defense subcontractors, industrial manufacturers, fabricators, and resellers. The company was incorporated in 2001 and is based in Bensenville, Illinois. Read More Rubicon Technology Stock Analysis - MarketRank™See Top-Rated MarketRank™ Stocks25th Percentile Overall ScoreRBCN MarketRank™: Rubicon Technology scored higher than 25% of companies evaluated by MarketBeat, and ranked 551st out of 654 stocks in the computer and technology sector. Scores are calculated by averaging available category scores, with extra weight given to analysis and valuation. Analyst's OpinionN/AAnalyst RatingN/A Consensus RatingThere is not enough analysis data for Rubicon Technology. Earnings and Valuation1.3 / 5Proj. Earnings GrowthN/A Price to Earnings Ratio vs. the MarketThe P/E ratio of Rubicon Technology is 22.79, which means that it is trading at a less expensive P/E ratio than the market average P/E ratio of about 28.66.Price to Earnings Ratio vs. SectorThe P/E ratio of Rubicon Technology is 22.79, which means that it is trading at a less expensive P/E ratio than the Computer and Technology sector average P/E ratio of about 54.15.Price to Book Value per Share RatioRubicon Technology has a P/B Ratio of 25.47. P/B Ratios above 3 indicate that a company could be overvalued with respect to its assets and liabilities. Short Interest5.0 / 5Short Interest LevelHealthy Percentage of Shares Shorted0.49% of the float of Rubicon Technology has been sold short.Short Interest Ratio / Days to CoverRubicon Technology has a short interest ratio ("days to cover") of 2.5, which is generally considered an acceptable ratio of short interest to trading volume.Change versus previous monthShort interest in Rubicon Technology has recently decreased by 8.20%, indicating that investor sentiment is improving significantly. Dividend0.0 / 5Dividend StrengthWeak Dividend YieldRubicon Technology does not currently pay a dividend.Dividend GrowthRubicon Technology does not have a long track record of dividend growth.Read more about Rubicon Technology's dividend. Sustainability and ESGN/AEnvironmental ScoreN/A Percentage of Shares Shorted0.49% of the float of Rubicon Technology has been sold short.Short Interest Ratio / Days to CoverRubicon Technology has a short interest ratio ("days to cover") of 2.5, which is generally considered an acceptable ratio of short interest to trading volume.Change versus previous monthShort interest in Rubicon Technology has recently decreased by 8.20%, indicating that investor sentiment is improving significantly. News and Social Media1.8 / 5News Sentiment0.29 News SentimentRubicon Technology has a news sentiment score of 0.29. This score is calculated as an average of sentiment of articles about the company over the last seven days and ranges from 2 (good news) to -2 (bad news). This is a lower news sentiment than the 0.83 average news sentiment score of Computer and Technology companies.News Coverage This WeekMarketBeat has tracked 5 news articles for Rubicon Technology this week, compared to 0 articles on an average week.Search InterestOnly 1 people have searched for RBCN on MarketBeat in the last 30 days. This is a decrease of 0% compared to the previous 30 days. Company Ownership0.0 / 5Insider TradingN/A Insider Buying vs. Insider SellingIn the past three months, Rubicon Technology insiders have not sold or bought any company stock.Percentage Held by InsidersOnly 3.60% of the stock of Rubicon Technology is held by insiders.Percentage Held by InstitutionsOnly 0.01% of the stock of Rubicon Technology is held by institutions.Read more about Rubicon Technology's insider trading history. Receive RBCN Stock News and Ratings via Email Sign-up to receive the latest news and ratings for Rubicon Technology and its competitors with MarketBeat's FREE daily newsletter. Email Address RBCN Stock News HeadlinesJanel’s Charter Amendment Approved by ShareholdersAugust 22 at 6:10 PM | tipranks.comRubicon Technology (RBCN) to Acquire Janel Group in $33.25 Million DealAugust 21, 2025 | gurufocus.comTrump’s national nightmare is herePorter Stansberry and Jeff Brown say a new U.S. national emergency is already underway — and it could trigger the biggest forced rotation of capital since World War II. They reveal why Trump is mobilizing America’s tech giants… and name the two stocks most likely to soar as trillions shift behind the scenes.August 25 at 2:00 AM | Porter & Company (Ad)Rubicon Technology to acquire Janel Group for $4.75 per shareAugust 21, 2025 | msn.comRubicon Technology, Inc. to acquire Janel Group LLC | RBCN Stock NewsAugust 20, 2025 | gurufocus.comRubicon Technology, Inc. to acquire Janel Group LLCAugust 20, 2025 | globenewswire.comRubicon Technology Stock Price, Quotes and Forecasts | OTC:RBCN | BenzingaApril 23, 2025 | benzinga.comWork Truck Solutions Announces Strategic Investment from Rubicon Technology PartnersMarch 4, 2025 | globenewswire.comSee More Headlines RBCN Stock Analysis - Frequently Asked Questions How have RBCN shares performed this year? Rubicon Technology's stock was trading at $1.65 on January 1st, 2025. Since then, RBCN stock has increased by 162.4% and is now trading at $4.33. When did Rubicon Technology's stock split? Shares of Rubicon Technology reverse split on Friday, May 5th 2017.The 1-10 reverse split was announced on Thursday, May 4th 2017. The number of shares owned by shareholders was adjusted after the closing bell on Thursday, May 4th 2017. An investor that had 100 shares of stock prior to the reverse split would have 10 shares after the split. Does Rubicon Technology have any subsidiaries? Rubicon Technology subsidiaries include Rubicon DTP LLC, Rubicon Technology BP LLC, and Rubicon Technology Worldwide LLC. How do I buy shares of Rubicon Technology? Shares of RBCN stock can be purchased through any online brokerage account. Popular online brokerages with access to the U.S. stock market include Charles Schwab, E*TRADE, Fidelity, and Vanguard Brokerage Services. What other stocks do shareholders of Rubicon Technology own? Based on aggregate information from My MarketBeat watchlists, some other companies that Rubicon Technology investors own include Ballard Power Systems (BLDP), Cree (CREE), Six Flags Entertainment (FUN), Actinium Pharmaceuticals (ATNM), Groupon (GRPN), NeoPhotonics (NPTN) and Ritter Pharmaceuticals (RTTR). Company Calendar Today8/25/2025Fiscal Year End12/31/2025Get Stock AlertsIndustry, Sector and Symbol Stock ExchangeNASDAQ SectorComputer and Technology Industry Electronic parts & equipment, not elsewhere classified Sub-IndustrySemiconductor Equipment Current SymbolNASDAQ:RBCN CIK1410172 Webwww.rubicontechnology.com Phone(847) 295-7000Fax847-295-7555Employees10Year Founded2001Profitability EPS (Trailing Twelve Months)($0.17) Trailing P/E Ratio22.84 Forward P/E RatioN/A P/E GrowthN/ANet Income-$10 thousand Net Margins-29.90% Pretax Margin-29.84% Return on Equity-122.29% Return on Assets-47.56% Debt Debt-to-Equity RatioN/A Current Ratio1.51 Quick Ratio1.38 Sales & Book Value Annual Sales$3.88 million Price / Sales2.66 Cash Flow$0.05 per share Price / Cash Flow89.59 Book Value$0.17 per share Price / Book25.53Miscellaneous Outstanding Shares2,380,000Free Float2,292,000Market Cap$10.33 million OptionableNot Optionable Beta0.97 Social Links 7 Energy Stocks to Buy and Hold ForeverWith the proliferation of data centers and electric vehicles, the electric grid will only get more strained. Download this report to learn how energy stocks can play a role in your portfolio as the global demand for energy continues to grow.Get This Free Report This page (NASDAQ:RBCN) was last updated on 8/25/2025 by MarketBeat.com Staff From Our PartnersBONUS GUIDE - Ben Stein Prepares For the Next Financial CrisisWith inflation high, debt soaring, and global tensions rising, a financial storm may be brewing. Economist ...Goldco Precious Metals | SponsoredGENIUS Act: Cancel Your Money?A new law called the GENIUS Act could quietly trigger the most radical shift in American finance in decades. B...Priority Gold | SponsoredAlex’s “Next Magnificent Seven” stocksThe original “Magnificent Seven” turned $7K into $1.18 million. Now, Alex Green has identified AI’s Next Ma...The Oxford Club | SponsoredOut of 18,347 Cryptocurrencies... 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